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How quickly do invasive raccoons learn to steal bait? : lesson from disturbed small mammal trapping

Piórkowska Kinga, Jankowiak Łukasz, Modelska Zuzanna, Hoffmann Anke, Kuzdrowska Klaudia, Malinowska Bogna, Sęk Oliwia, Rychlik Leszek

Polish Journal of Ecology

2023

Vol. 71, nr 2-3

95--99

The expansion of invasive alien species is a major threat to the environment and economy. Animal invasions, especially by raccoons Procyon lotor are increasingly harmful. Raccoons' reduced neophobia enables easy adaptation to humans and surroundings. They exploit human presence in their natural habitat. Camera traps and direct observations in Germany's Lower Oder Valley National Park and Poland's Lower Oder Valley Landscape Park revealed raccoons' cognitive abilities and effective learning processes. This study demonstrates their rapid learning in finding and opening traps, removing bait, killing and eating trapped rodents. To minimize disturbance by raccoons, we recommend to preselect study plots without raccoons or to use of protective devices.

Ojciec - pracz? Pracz!

Nawrot Radosław

Zieleń Miejska

2019

Nr 10

34--36

Nie ma zwierzęcia, które by równie dobrze pasowało do wizerunku włamywacza. Ciemna maska na oczach i niezwykle sprawne ręce. Dzięki nim wydostał się z więzienia na wolność i został rabusiem, jakiego w miastach dotąd nie mieliśmy.

Predicting the potential invasive range of raccoon in the world

Farashi A., Naderi M., Safavian S.

Polish Journal of Ecology

2016

Vol. 64, nr 4

594--600

Invasive alien species are considered to be one of the most important causes for the extinction and the reason for diminishing of the wild native species. Considering that nowadays the raccoon (Procyon lotor, Linnaeus 1758) is found in several European and Asian countries where it can amplification its ranges remarkably, but it is actually native to North and Central America. Here, we use the Maxent model to generate a preliminary map of the potential distribution of the raccoon around the world and enumerate its relative risk of invasion across all countries. In a study, MaxEnt predicted a significantly large area as the eco-climatically suitable habitat for the raccoon in the world. The predicted habitats are consistent with the wide-ranging habitat associations of the raccoon in its well-established sites. The results identified the hotspots of the raccoon invasion and indicated the possible dispersal pathways. Results also showed that both precipitation and temperature variables were strongly correlated with the raccoon distribution and the species would be absent in cold environments with average sub-zero temperatures.